var data1 = moment('29/04/2019 00:00', "DD/MM/YYYY hh:mm");
        var data2 = moment('30/04/2019 02:00', "DD/MM/YYYY hh:mm");
        var diferenca = data1.diff(data2, 'hours');

        console.log(diferenca); // 2
//
        var data1 = moment('29/04/2019 00:00', "DD/MM/YYYY hh:mm");
        var data2 = moment('30/04/2019 02:00', "DD/MM/YYYY hh:mm");
        var diferenca = data1.diff(data2, 'days');

        console.log(diferenca); // 1